// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://chromium.googlesource.com/chromium/src/+/master/docs/linux_sandbox_ipc.md

#ifndef CONTENT_BROWSER_RENDERER_HOST_SANDBOX_IPC_LINUX_H_
#define CONTENT_BROWSER_RENDERER_HOST_SANDBOX_IPC_LINUX_H_

#include <memory>
#include <vector>

#include "base/files/scoped_file.h"
#include "base/macros.h"
#include "base/pickle.h"
#include "base/threading/simple_thread.h"

class SkString;

namespace content {

class SandboxIPCHandler : public base::DelegateSimpleThread::Delegate {
public:
    // lifeline_fd: the read end of a pipe which the main thread holds
    // the other end of.
    // browser_socket: the browser's end of the sandbox IPC socketpair.
    SandboxIPCHandler(int lifeline_fd, int browser_socket);
    ~SandboxIPCHandler() override;

    void Run() override;

private:
    int FindOrAddPath(const SkString& path);

    void HandleRequestFromRenderer(int fd);

    void HandleFontMatchRequest(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleFontOpenRequest(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleGetFallbackFontForChar(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleGetStyleForStrike(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleLocaltime(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleMakeSharedMemorySegment(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void HandleMatchWithFallback(int fd,
        base::PickleIterator iter,
        const std::vector<base::ScopedFD>& fds);

    void SendRendererReply(const std::vector<base::ScopedFD>& fds,
        const base::Pickle& reply,
        int reply_fd);

    const int lifeline_fd_;
    const int browser_socket_;
    std::vector<SkString> paths_;

    DISALLOW_COPY_AND_ASSIGN(SandboxIPCHandler);
};

} // namespace content

#endif // CONTENT_BROWSER_RENDERER_HOST_SANDBOX_IPC_LINUX_H_
